In Spain, conservas, or foods preserved in cans and jars, are not simply a matter of economic survival or a source of basic nutrition for students, hikers, military recruits and the like. Rather, the tradition of conservas more resembles that of keeping one’s most beautiful jewelry locked safe in a strongbox, to be brought out only on special occasions like Christmas, birthdays or the victory of a favorite football team. There’s nothing better than some delicate canned cockles to lavish on your parents-in-law before a holiday meal!

Dear Culinary Backstreets, Where can I go in Barcelona when I'm tired of sightseeing and I just want to sit down and relax with a cup of coffee? Visiting museums and landmarks can be a lot of fun when you're a tourist but sometimes you can learn more about the life of a city by sitting in a chair in a café than you can by reading any guidebook. In Barcelona, there's no shortage of cafés but like anywhere else, it can sometimes be a bit tricky to find one that has just the right ambiance.

Editor’s note: This feature from Barcelona is the third installment in our series this week devoted to the top street foods in each of the Culinary Backstreets cities. In Barcelona, a great deal of eating is done in the streets. Sidewalk cafés line the plazas and paseos, often to the point that it’s difficult to tell which tables belong to which establishment.

Dear Culinary Backstreets, We will be visiting Barcelona with our children. Do you have any good recommendations of places in the city to eat with kids?

Dear Culinary Backstreets, I hear that Spaniards take their dinner very late. Are there any good restaurants in Barcelona that start serving dinner before 9 p.m.? Indeed, Spaniards are notorious for eating late. Even when dining at home, the typical Spanish family doesn’t eat their dinner until around 9 or 10 p.m. – or sometimes even later! The main reason for this is that for most people in Spain, lunch – which usually consists of at least two courses and is eaten at some point between 1:30 and 4 p.m. – is the most substantial meal of the day. It makes sense, then, that nobody has much of an appetite again until late in the evening.

Once a mostly beer-free country, Spain – traditionally a land of wine drinkers – has recently started to develop a taste for the sudsy beverage, and Catalonians seem to have been the main pioneers behind this growing trend. The number of local craft breweries is increasing and so is the number of beer fans, who are also learning how to brew the drink at home. Put it all together and you have a young and adventurous market that is ready to experiment with tastes and textures to create stellar new beers with a distinct Mediterranean flavor.

Dear Culinary Backstreets, I’m traveling to Barcelona and I love visiting food markets. I’ve heard a lot about La Boquería, but are there any other markets that might be worth visiting?

De toda la vida is a Spanish expression that basically means “It’s been around forever,” and it’s a sure thing that the locals in Barcelona’s Gràcia neighborhood will utter those words if you ask them about Bodega Quimet. Opened in the 1950s by the Quimet family, the bodega (not to be confused with Quimet i Quimet, a popular Barcelona tapas bar) was passed down from father to son until 2010, when the younger (but nonetheless old) Quimet retired and brothers Carlos and David Montero bought the venue. David Montero had always worked as a cook and dreamed of owning his own place. However, after buying Quimet, instead of doing the renovations so typical of Barcelona bars that change hands (such as modernizing the furnishings or installing a huge flat-screen TV for showing fútbol matches), the Montero brothers made the somewhat unusual decision to keep everything, from the low prices to the décor, pretty much the same as it always had been.

As the legend goes, a 19th-century Catalan farmer was out experimenting in his fields when he came up with a new kind of longer, juicier green onion, the calçot. In creating the onion, the farmer produced much more than a new vegetable; he also paved the way for the rise of an idiosyncratic, and distinctly Catalan, cultural event.

Dear Culinary Backstreets, I’ll be in Spain during the December holidays and I’m wondering if Barcelonans eat any special meal on Christmas? If so, what is it and where in the city could I try it?

Mushroom hunting has an irresistible, magical pull. Composer John Cage, an avid mushroom collector, found them an integral part of his creative process, once writing: “Much can be learned about music by devoting oneself to the mushroom.” Every fall, thousands of Catalans likewise find themselves under the mushroom’s spell, following the elusive fungus’s silent melody into the woods, a rustic wicker basket in one hand and – more and more these days – a GPS-enabled smartphone in the other.

Through the Daily Beast, we’ve just been introduced to the literary character Pepe Carvalho, Barcelona’s “gastronome private eye.

Be it kvass in Russia or boza in Turkey, every nation seems to have one of their own, a locally loved drink that to most outsiders comes off as a particularly strange brew. In Spain, that drink is horchata, a unique and deliciously refreshing concoction made from chufas (tigernuts), water and sugar. Served chilled, horchata is beloved all over the peninsula.

Viena is the love child of an Austrian ski lodge and a McDonald’s. This Catalan fast-food joint – which has become an obligatory foodie stop thanks to New York Times food writer Mark Bittman, who famously wrote that Viena’s flauta de jamón ibérico was the best sandwich he’d ever had – dishes up fast and delicious grub with a side of kitsch.